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iio: Improve iio channel parsing to add enabled channels

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scale and other attributes have to be read individually as they vary quite alot
depending on the channel. We only care/take data from scan_elements

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2015-10-05 12:01:00 +01:00
parent 2c97fd5953
commit acfb74f04e
4 changed files with 28 additions and 14 deletions
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17
examples/iio_driver.c
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@@ -29,15 +29,13 @@ static void
printword(uint16_t input, mraa_iio_channel *chan)
{
int16_t res;
if (!chan->lendian) {
input = be16toh(input);
} else {
input = le16toh(input);
}
// currently we don't treat scales
chan->scale = 1.0f;
input >>= chan->shift;
input &= chan->mask;
if (chan->signedd) {
@@ -45,7 +43,7 @@ printword(uint16_t input, mraa_iio_channel *chan)
} else {
res = input;
}
printf("chan %d == %05f\n", chan->index, ((float)res + chan->offset) * chan->scale);
printf(" value = %05f\n", chan->index, (float)res);
}
mraa_iio_context iio_device0;
@@ -57,13 +55,14 @@ interrupt(char* data)
int i = 0;
for (i; i < mraa_iio_get_channel_count(iio_device0); i++) {
printf("channel bytes %d\n", channels[i].bytes);
switch (channels[i].bytes) {
case 2:
printword(*(uint16_t *)(data + channels[i].location), &channels[i]);
if (channels[i].enabled) {
printf("channel %d - bytes %d\n", channels[i].index, channels[i].bytes);
switch (channels[i].bytes) {
case 2:
printword(*(uint16_t *)(data + channels[i].location), &channels[i]);
}
}
}
printf("data %s\n", (char*) data);
}
int